## Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

(a) $5$ (b) $11$ (c) $0$ (d) $0$ (e) $1$ (f) $7$
(a) $(f\circ g)(1)=f(g(1))=f(0)=5$ (b) $(f\circ g)(2)=f(g(2))=f(-3)=11$ (c) $(g\circ f)(2)=g(f(2))=g(1)=0$ (d) $(g\circ f)(3)=g(f(3))=g(-1)=0$ (e) $(g\circ g)(1)=g(g(1))=g(0)=1$ (f) $(f\circ f)(3)=f(f(3))=f(-1)=7$